Download or read book IMMS General Textbook of Entomology written by A.D. Imms and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: seem as appropriate now as the original balance was when Dr A. D. Imms' textbook was first published over fifty years ago. There are 35 new figures, all based on published illustrations, the sources of which are acknowledged in the captions. We are grateful to the authors concerned and also to Miss K. Priest of Messrs Chapman & Hall, who saved us from many errors and omissions, and to Mrs R. G. Davies for substantial help in preparing the bibliographies and checking references. London O.W.R. May 1976 R.G.D. Part I ANATOMY AND PHYSIOLOGY Chapter I INTRODUCTION Definition of the Insecta (Hexapoda) The insects are tracheate arthropods in which the body is divided into head, thorax and abdomen. A single pair of antennae (homologous with the anten nules of the Crustacea) is present and the head also bears a pair of mandibles and two pairs of maxillae, the second pair fused medially to form the labium. The thorax carries three pairs of legs and usually one or two pairs of wings. The abdomen is devoid of ambulatory appendages, and the genital opening is situated near the posterior end of the body. Postembryonic development is rarely direct and a metamorphosis usually occurs.
Download or read book Imms General Textbook of Entomology written by Augustus Daniel Imms and published by Springer Science & Business Media. This book was released on 1977-11-30 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt: Band 2.
Download or read book Imms Outlines of Entomology written by O. W. Richards and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: In his preface to early editions of this book, the late Dr. A. D. Imms said that he intended it to be an elementary account of entomology as a branch of general biology. He had especiaHy in mind the needs of university students of zoology and agriculture, as weH as those intending later to specialize in entomology, and he suggested that the book might also interest teachers of advanced biology in schools. These general aims and the balance between the different aspects of the subject have changed linIe in this and in our previous revision. We have, however, tried to bring the present edition up to date on the lines of our revised tenth edition of Imms' General Textbook 0/ Entomology, published in 1977. The text has been entirely re-set and eleven illustrations have been replaced by new figures. The same orders of insects are recognized as in the last edition, but the sequence in which the Endopterygote groups appear has been changed to reflect more accurately their probable evolutionary relationships. Many small changes and some addi tions have been made in the physiological sections, the chapter on the origin and phylogeny of insects has been rewritten, and a new bibliography provides a selection of modern references for the in tending specialist. It has been our object to make these alterations without materially increasing the length of the book or its level of difficulty.
Download or read book Imms General Textbook of Entomology written by O.W. Richards and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 941 pages. Available in PDF, EPUB and Kindle. Book excerpt: seem as appropriate now as the original balance was when Dr A. D. Imms' textbook was first published over fifty years ago. There are 35 new figures, all based on published illustrations, the sources of which are acknowledged in the captions. We are grateful to the authors concerned and also to Miss K. Priest of Messrs Chapman & Hall, who saved us from many errors and omissions, and to Mrs R. G. Davies for substantial help in preparing the bibliographies and checking references. London O. W. R. R. G. D. May 1976 Part III THEORDERSOFINSECTS THE CLASSIFICATION AND PHYLOGENY OF INSECTS The classification of insects has passed through many changes and with the growth of detailed knowledge an increasing number of orders has come to be recognized. Handlirsch (1908) and Wilson and Doner (1937) have reviewed the earlier attempts at classification, among which the schemes of Brauer (1885), Sharp (1899) and Borner (1904) did much to define the more distinctive recent orders. In 1908 Handlirsch published a more revolutionary system, incorporating recent and fossil forms, which gave the Collembola, Thysanura and Diplura the status of three independent Arthropodan classes and considered as separate orders such groups as the Sialoidea, Raphidioidea, Heteroptera and Homoptera. He also split up the old order Orthoptera, gave its components ordinal rank and regrouped them with some of the other orders into a subclass Orthopteroidea and another subclass Blattaeformia.
Download or read book Poems Edited with Introductions Various Readings and Notes by J Schipper written by William Dunbar and published by . This book was released on 1891 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Will You Miss Me When I m Gone written by Mark Zwonitzer and published by Simon and Schuster. This book was released on 2014-10-14 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first major biography of the Carter Family, the musical pioneers who almost single-handedly created the sounds and traditions that grew into modern folk, country, and bluegrass music. Meticulously researched and lovingly written, it is a look at a world and a culture that, rather than passing, has continued to exist in the music that is the legacy of the Carters—songs that have shaped and influenced generations of artists who have followed them. Brilliant in insight and execution, Will You Miss Me When I'm Gone? is also an in-depth study of A.P., Sara, and Maybelle Carter, and their bittersweet story of love and fulfillment, sadness and loss. The result is more than just a biography of a family; it is also a journey into another time, almost another world, and theirs is a story that resonates today and lives on in the timeless music they created.
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Download or read book Handbook of Multiple Sclerosis written by Stuart D. Cook and published by CRC Press. This book was released on 2001-03-30 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting on the latest advances made in treating multiple sclerosis (MS) and continuing the high standards set by earlier editions, the Handbook of Multiple Sclerosis, Third Edition examines a wide range of topics from etiology to treatment options. Analyzes recent developments in the natural history, immunopathology, lesion evolution, and
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Download or read book A Presentation by National 4 H Conference Participants Concerning the Future of Agriculture in the United States written by United States. Congress. House. Committee on Agriculture. Subcommittee on Biotechnology, Horticulture, and Research and published by . This book was released on 2015 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Lymphocytes in MS and EAE More than just a CD4 World written by Manu Rangachari and published by Frontiers Media SA. This book was released on 2017-10-10 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple sclerosis is degenerative disease of the central nervous system (CNS) in which myelin destruction and axon loss leads to the accumulation of physical, cognitive, and mental deficits. MS affects more than a million people worldwide and managing this chronic disease presents a significant health challenge. Multiple lines of evidence indicate that MS is an autoimmune disorder in which immune cells launch an inflammatory attack targeting myelin antigens. Indeed, myelin-reactive T cells and antibodies have been identified in MS patients and in animal models (namely experimental autoimmune encephalomyelitis, or EAE) that recapitulate many features of human disease. Animal model studies have demonstrated that T cells are both necessary and sufficient to initiate and sustain CNS autoimmunity. However, most MS animal models rely on the role played by CD4+ T cells and partially replicate the multiple aspects of MS pathogenesis. Thus, research in the past has focused heavily on the contribution of CD4+ T cells to the disease process; searching PubMed for “MS AND CD4” yields twice the results as corresponding searches for “CD8” or “B cell” and four times that for “NK cells”. While CD4+ T cells may represent the minimum requirement to mediate CNS autoimmunity, it is clear that the immune response underlying human MS is far more complex and involves numerous other immune cells and subsets. This is well illustrated by the observation that MS patients treated with an anti-CD4 depleting antibody did not gain any clinical benefits whereas removal of several lymphocyte subsets using an anti-CD52 depleting antibody has been shown to impede disease progression. In particular, the pathogenic role(s) of non-CD4+ T cell lymphocytes is relatively poorly understood and under-researched, despite evidence that these subsets contribute to disease pathology or regulation. For example, the observed oligoclonal expansion of CD8+ T cells within the CNS compartment supports a local activation. CD8+ T cells with polarized cytolytic granules are seen in close proximity to oligodendrocytes and demyelinated axons in MS tissues. The presence of B cells in inflammatory lesions and antibodies in the CSF have long been recognized as features of MS and Rituximab, a B cell depleting therapy, has been shown to be highly effective to treat MS. Intriguingly, the putative MS therapeutic reagent Daclizumab may function in part through the expansion of a subset of immunoregulatory NK cells. NKT and γδ T cells may also play a role in CNS autoimmunity, given that they respond to lipid antigens and that myelin is lipid-rich. While different animal models recapitulate some of these aspects of human disease, identifying appropriate models and measures to investigate the role of these less well-understood lymphocytes in MS remains a challenge for the field. This Frontiers research topic aims to create a platform for both animal- and human-focused researchers to share their original data, hypotheses, future perspectives and commentaries regarding the role of these less-well understood lymphocyte subsets (CD8+ T cells, B cells, NK cells, NK T cells, γδ T cells) in the pathogenesis of CNS autoimmunity.
